Form students into an inner circle and an outer circle.The inner circle students turn to face the outer circle, with each student facing another. On your signal, they start a conversation with the person they are facing about their own topic, or something you suggest. When you have them stop, the inner circle turns clockwise so each student is facing a different one.

Students stand in parallel lines, each facing another, about two feet apart. At your signal, they start a converstaion with the person they are facing. At your next signal, they all take a step back and continue talking. Keep going until everyone is against a wall and shouting at each other.

Divide the group into pairs, facing each other. Student A from each group makes a series of slow movements and student B must do their best to act as a mirror to student A.

Bring out a long roll of paper and have students position themselves along next to it, with pens and pencils. Students are given a set time to write down as many connected ideas as they can. After the time is up, they stand up and wander around to see each other's (anonymous) ideas.

Tell the students to act as if there is a strong wind and they are being blown all over the place. Whenever you hit the tamborine/instrument, they change direction. Alternatively, stand to the side and pretend you are blowing at them while they pretend to be blown away. This should be a short activity, in any case, because they'll probably get excited.

Go around the (wide) circle and have each student introduce himself by making a wild motion or gesture. All of the other students repeat his name while copying the movement.

Each student thinks of an action starting with the first letter of their name, and introduces themselves like "My name is Fred, and I like fishing" before phantomining the process of fishing.

Take it in turns to suggest a completely boring and usual activity for everyone to do. The class reacts as enthusiastically as possible, shouting 'Yes!' and doing the action. Make your last suggestion the one that leads to the next activity, like sitting down quietly.